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Home >> Nissan-Datsun >> 2021 >> Sentra SR >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (2 Of 2) >> Components/Circuit Diagnosis >> Heated Oxygen Sensor 2 Heater >> Component Inspection
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Component Inspection

  1. CHECK HEATED OXYGEN SENSOR 2 HEATER 
    1. Turn ignition switch OFF.
    2. Disconnect heated oxygen sensor 2 harness connector.
    3. Check resistance between heated oxygen sensor 2 terminals as follows.

      Heated oxygen sensor 2

      Condition

      Resistance

      +

      -

      Terminal

      4

      3

      Temperature

      25 deg. C (77 deg. F)

      5.4 - 7.3 Ohms

      1

      2

      Not existed

      3

      4

      4

      1

      2

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    Replace malfunctioning heated oxygen sensor 2.

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